Has anyone had problems with taking vitamins with their IBS. I have had these vitamins renting a shelf in my pantry for some time now and I finally decided to start taking them once again. I never real have taken them since I bought them. Anyway, they are a women's complete vitamin packet where there are 5 capsules in one packet and you need to take one packet per day. I didn't want to upset my stomach so I started taking 3 in the a.m. with breakfast and the other 2 in the evening. The last two nights I had a lot of trouble sleeping and finally realized today that it must be the vitamins. That is the only thing I am doing differently the last 2 days. Also, it has upset my stomach the last 2 days as well. I am not sure if the vitamins have bothered my IBS or if it is just as much the lack of sleep I have had. I am C and I tend to need a lot rest with my IBS.I stopped the vitamins today.. I am wondering if it is the B portion that would do this?